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Carmo Manufacturing engineering

Design for manufacturing (DFM)

A design change now costs a meeting. It could save you millions.

In short: Carmo’s manufacturing engineering is design for manufacturing (DFM) done by the people who will manufacture your part and live with the daily consequences. A change before the design freezes costs a meeting; after tooling it costs serious money and time.

What we look at before the design freezes

Six things our injection-moulding engineers check:

  • Mouldability: walls, draft, undercuts, gating, warpage risk
  • Material: fit to function, sterilisation route, regulatory file, cost per part
  • Tolerance realism: what the process holds repeatably, and where capability (Cpk) must be proven
  • Part consolidation: two parts into one 2K moulding, so fewer tools, fewer parts to qualify and no assembly step
  • Automation potential: feeding, orientation, printing and packing designed in with the part
  • Tooling concept: cavities, gating, hot or cold runner, the first lines of the tool’s requirements specification
Design review at Carmo: engineers compare a moulded component with its CAD model on the meeting-room screen.
Additive manufacturing plus injection moulding equals Carmo Print Moulding

Then prove it in your production material, in days

A review is an opinion until a part exists: how rapid prototyping with Carmo Print Moulding works.

The same people carry the design into production

Manufacturing engineering at Carmo stays with the part. The engineers who review the design:

So at scale-up there is no new supplier to qualify: one development and production partner from concept to regulated volume production.

If your component will be assembled, inspected, printed or packed in a cleanroom, that requirement enters the review at this stage: cleanroom production at Carmo.

From Carmo Print Moulding prototypes through pilot production to high-volume injection moulding
Adaptive engineering, the versatile tool icon

Making an existing part cheaper, or better, or both

Some of the highest-leverage work is on components already in production. When you have field experience with the part, our production experience finds the changes worth making:

  • a multi-piece assembly consolidated into a one-piece 2K or 3K moulding, with fewer parts and fewer leak paths
  • a more efficient material or recipe
  • a redesign for higher automation throughput
  • a downstream finishing step eliminated

We recommend, you decide: every change waits for your go, and it pays back over the device’s remaining life.

We design our own components too, and it shows in yours

Carmo Print Moulding, the Carmo SuperValve™ family (built on Carmo’s granted Cross Valve and Turnvalve patents) and the patented Metal Reinforced Eyelet were all developed in-house. Fluid-bag ports and valves and HF-weldable eyelets have been in continuous production for decades. There was no customer to hand a problem back to; we had to make it work. That is the experience that goes into your design review:

  • we know why a geometry is shaped the way it is: what failed on the way, where the tolerance actually has to hold
  • we know what a design decision costs over a lifetime: a material change, a re-validation trigger, a copy tool at end of life
  • we take the components others decline, and your project sits in the same queue as our own

Ready to discuss your project?

Send the drawing or STEP file and tell us where the design stands: concept, frozen, or a part already in production. Email is fine, NDA first if you need it; we’ll tell you within days what we’d change before the tool, and why.

Anders Johnsen
Anders Johnsen
VP, R&D and Technology
+45 4912 2102

Frequently asked questions

What the review covers

What does a manufacturing-engineering review at Carmo cover?

Design for manufacturing (DFM), done by the engineers who will mould the part, before the design freezes: mouldability (walls, draft, undercuts, gating, warpage risk), material (function, sterilisation route, regulatory fit, cost per part), tolerance realism (what the process holds repeatably; which dimensions carry Cpk in validation), part consolidation (two parts into one 2K moulding: fewer tools, less capex, fewer parts to qualify, no assembly step), automation potential and the tooling concept (cavities, gating, runner system).

A design change at this stage costs a meeting; after tooling it costs steel and re-validation.

Is the DFM review part of the quotation, and can we opt out?

The full review is its own item in the quotation; you decide whether to include it. Two things are never optional: if we see an opportunity, or a design that in our judgement will be very hard to make succeed, we say so in the quotation itself. In-depth analysis, research and redesign work is quoted as an engineering service in its own right.

What does the review deliver?

Engineering feedback, not a report. The review lands as direct feedback on your drawing and in working sessions with your team, and its result is a better part and a better tool specification, not a document. Where we bring in specialist partners, for flow simulation or material testing, their report comes with it. If your quality team needs a specific format for the design file, we agree it with you.

How does Carmo integrate automation and robotics into component development?

Designed in alongside the component, while the design is still open: custom automation cells around the moulding machine for high-throughput production, inspection stations integrated in the line, robots in cleanroom assembly for repeatability and less operator intervention. Design-for-automation happens in the same development phase as the component design.

Show all 12 questions
Can Carmo help reduce production cost on an existing component?

Yes, one of the highest-leverage engagements. Decades of production experience find the changes that improve output, lift quality and lower component cost: a multi-piece assembly consolidated into a one-piece 2K or 3K moulding, a more efficient material or recipe, a redesign for higher automation throughput, a downstream finishing step eliminated. Each change is scoped against your change-control and re-validation cost before we propose it; the case is strongest when you already have field experience with the part.

From design to production

Does Carmo cover both the design phase and the volume production phase?

Yes. The engineers who review your design stay with it. The same team prototypes the component in Carmo Print Moulding, writes the tool’s requirements specification, runs the process validation builds (IQ/OQ/PQ) and takes the part into QMS-governed volume production. The design intent settled in the DFM review survives into the tool and the production line.

Which steps does Carmo handle in-house?

Every step of plastic component production sits with one engineering team at Carmo; the certified ISO 13485 system covers design, development, manufacture and assembly:

  • design and development, and tool engineering
  • injection moulding in 1K/2K/3K
  • automation and robotics
  • ISO Class 8 cleanroom assembly, inspection, printing and packaging
  • additive manufacturing via Carmo Print Moulding (prototyping, outside the certified scope by design)
How are the changes Carmo proposes handled under our change control?

We provide the insight and the recommendation; the decision is yours. Change control on a released device sits with you as the OEM, and every change waits for your explicit go. What a change means on your side (drawing revision, re-validation, regulatory impact) is assessed under your own change control; we give you the engineering case to assess it with.

Why does Carmo keep so much in-house rather than subcontracting?

Fewer handovers on a regulated component, and the engineering instinct: Carmo Print Moulding, the Carmo SuperValve™ family and the patented Metal Reinforced Eyelet were all developed in-house; solving problems by developing the technology rather than buying it is what shaped the integrated setup. Keeping the steps in-house keeps that production knowledge next to the machines, where the DFM review draws on it.

Working with Carmo

How early in a project should a customer engage Carmo?

As early as concept or design phase. First-hand production knowledge pays back most when applied early: design for manufacturing, material selection and prototypes in the production material all compound the earlier they are applied. Carmo takes on later-stage projects too (validation, scale-up, redesign of existing components), but the highest-leverage window is before tooling investment is committed.

What industries benefit most from Carmo's manufacturing engineering approach?

Medical-device OEMs benefit most, because a supplier change on a released device means re-qualification and re-validation, and Carmo’s certified ISO 13485 QMS covers the chain from validation builds onward. Technical applications across maritime, industrial, agriculture, cleantech and rescue markets benefit when the component must be engineered for the stresses the application demands: UV, saltwater, freeze-thaw, repeated cycling.

Does Carmo also design its own components?

Yes. Carmo Print Moulding, the Carmo SuperValve™ family (2K-moulded valves built on Carmo’s granted Cross Valve and Turnvalve patents) and the patented Metal Reinforced Eyelet were all developed in-house, and the same design team does customer-specific work: custom variants of standard components and full custom development from concept.

Why customers trust Carmo

Continuity

More than 80 years of continuous private ownership: one team from prototype to volume, no handover.

More about Carmo

Quality

ISO 13485-certified quality management and an ISO Class 8 cleanroom environment: components with the documentation your audit asks for.

Our quality assurance

Tenacity & know-how

You bring the problem; we bring the know-how to solve it. We don’t walk away from the hard ones. Hear it from our customers.

Hear from our customers